Rotary motor, pump, and the like.



F. LAMPLOUGH.

ROTARY MOTOR, PUMP, AND THE LIKE. APPLICATION FILED MAY 22, 1908.

953AY Patented Mar. 29, 1910.

2 SHEETS-SHEETL P. LAMPLOUGH.

ROTARY MOTOR, PUMP, AND THE LIKE.

APPLICATION 11.51) MAY 22, 1908 Patented Mar.29,1910.

2 SHEETS-SHEET 2.

UNllTFlD STATEfi PATENT FREDERICK LAMPLOUGH, OF LGNDON, ENGLAND.

ROTARY IvTOTQR, PUli'l'P, AND THE To all whom it may concern:

Be it known that I, FREDERICK LAMP- LoUorr, a subject of the King ofGreat Britain, residing at London, England, have invented new and usefulImprovements in Rotary Motors, Pumps, and the Like, of which thefollowing is a specification.

The invention has for its object improvements in rotary motors, pumpsand the like.

The improved motor, pump or the like, which I will hereafter refer to asa pump, comprises, as has heretofore been proposed, a hollow cylinder, arotating shaft, a sleeve like extension or bearing on one cover of thecylinder to receive the rotating shaft, a disk or cross piece on saidshaft fitting against one cover of the cylinder, diametrically op positearms or projections on said disk or cross piece extending across andclosely fitting against the inner periphery of the cylinder, a rotatingand oscillating piece or piston mounted on a fulcrum or center of motionformed on one of said arms or projections and closely fitting againstthe concave face of the opposite arm or projection, and a pin fixed inthe removable cover of the cylinder to give the oscillating motion tothe rotating and oscillating piece or piston.

As hitherto constructed the rotating and oscillating piece or piston wasformed with a central longitudinal slot working directly on the fixedpin, but it is found that such construction gives a very injuriousspasmodic motion to the oscillating piston.

According to the present invention means are provided in order to obtainan even vibration or oscillation of the piston, a special constructionof the piston is devised to enable such oscillating mechanism to beused, an improved construction of the fulcrum arm and of the coactingpart of the piston is provided in order to obtain greater strength, andthe outer faces of the arms or projections are each of such width as tocompletely close the ports of the cylinder at the conclusion of eachstroke.

I will describe my invention by the aid of the accompanying drawings, inwhich- Figure 1 is a vertical longitudinal section and Fi 2 is avertical transverse section of my improved rotary pump; Fig. 3 is a faceView or elevation and Fig. 4: is a sectional view drawn on the line H ofFig. 3, of the part of the piston which is fixed to the rotating shaftand Fig. 5 is a face View or Specification of Letters Patent.

Application fi1ed. May 22, 1908.

LIKE.

Patented Mar. 29, 1910.

Serial No. 434,321.

elevation, Fig. 6 an elevation drawn at Fig. 5 of the oscillatingportion of the piston.

The body of the pump consists, as heretofore, of a hollow cylinder a, b,0, having a sleeve-like extension or bearing (Z on the fixed cover a,while the other cover 0 is removable. To this body is fitted, asheretofore, a rotating shaft 6 which has attached to it a pistonconsisting of a disk or cross piece f and an oscillating piece 9rotating with it. The back of the disk or cross piece f fits, asheretofore, against the fixed cover a of the cylinder and it carries, asheretofore, diametrically opposite arms or projections h, 2', whichextend across the inner periphery Z) of the cylinder to the inner faceof the removable cover 0 and are shaped truly to fit against such parts.The projection h is, as heretofore, formed concavely cylindrical on theinner face 9', but the projection 1', instead of being concave as hasheretofore been proposed is according to the present invention formedconvex on its inner face is to a radius struck from the same center asthat from which the concavely cylindrical inner face 7' of theprojection h is struck by which means greater strength is obtained. Incombination with this cross piece 7 and its arms or projections ]L, i,is the oscillating piece or piston g, which, instead of beingconstructed, as heretofore, with a central longitudinally slotted web toreceive a pin fixed in the removable cover, is according to my inventionformed of a trough-like cross section with a portion of one cheekremoved in order to permit of its oscillation without coming intocontact with the fixed pin Z. This oscillating piece or piston g is alsoaccording to my invention hollowed out'at one end to truly fit theconvex cylindrical projection 2', thereby affording a large bearingsurface and greatly increasing its strength at such part. The other endof the oscillating piece 9 is, as has heretofore been proposed, formedof a similar radius to that of the interior concave cylindrical face jof the projectionh which it truly fits, and is made on one side to fittruly against the inner face of the cross piece f and on the other sideagainst the inner face of the removable cover 0. Afixed pin Z is, asheretofore, carried by the removable cover 0 at a short distance fromthe center of said cover. On this pin Z, according to the presentinvention, is placed one end of a link m, which is housed within thehollow piston g and the other end of which is placed 011 a cross pin afixed in the sides of the oscillating piston g and extending across thesame from one side to the other thereof.

By this arrangement of parts for giving the oscillating motion to thepiston g, an even vibration is given to the latter, instead of thespasmodic motion which it would receive if the fixed pin were caused toenter a slot in such piston g as has heretofore been proposed.

The body of the pump, as heretofore, is provided on its periphery b withdiametrically opposite ports 0, p, and those parts of the outer faces ofthe arms or projections h, 2', which are in contact with the cylinderare, according to my invention, each of width to completely close suchports at the conclusion of each stroke, that is to say, twice in eachrevolution.

The sleeve-like extension or bearing (Z for the rotating shaft 6 isprovided with a stuffing box 9 which has a lateral opening 1 into whicha gland s is screwed.

The faces of the cross piece 7 and of its arms or projections h, i,which bear against the covers a, c, and inner periphery Z) of the pumpbody, are provlded with grooves t uch as are known as hydraulic waterjoints,

{and the outer faces of the sides and ends of the oscillating piece 9are also provided pump can be made to pump either way at will.

As the outer faces of the piston arms or projections move over the ports0, 2), another cycle of the rotation commences with a fresh suction anddelivery stroke, that is to say, the pump has two suction and twodelivery strokes for each revolution of the piston.

The application of the above construction to a motor or the like will bereadily understood.

What I claim is:

The combination in a rotary motor, pump or the like, having a hollowcylinder formed with a fixed cover, a removable cover having ,aneccentric pin fixed thereto, a rotating shaft, a sleeve-like bearing forthe rotating shaft, diametrically opposite ports on the periphery of thecylinder, :1 cross piece on the rotating shaft adjacent the fixed cover,diametrically opposite arms on such cross piece extending across theperiphery of the cylinder to the removable cover and truly fitting suchparts, of an oscillating piston having a cavity and fitting against theinner face of the cross piece and against the arms or projections andthe removable cover, a cross pin fixed in the cheeks of the oscillatingpiston, a link fitting the fixed eccentric pin and the cross pin, and arecess in one of the cheeks of the oscillating piston to enable thelatter to free the fixed eccentric pin in working, substantially asherein set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FREDERICK LAMPLOUGH.

lVitnesses B. J. B. MILLS, WM. GIRLING.

